United States National Museum. (1901). [Circular relating to continuation of "Life histories of North American birds," request for information]. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States National Museum. [Circular Relating to Continuation of "Life Histories of North American Birds," Request for Information]. [Washington]: [publisher not identified], 1901.
MLA (9th ed.) CitationUnited States National Museum. [Circular Relating to Continuation of "Life Histories of North American Birds," Request for Information]. [publisher not identified], 1901.
Warning: These citations may not always be 100% accurate.